/*

 * Licensed to the Apache Software Foundation (ASF) under one

 * or more contributor license agreements.  See the NOTICE file

 * distributed with this work for additional information

 * regarding copyright ownership.  The ASF licenses this file

 * to you under the Apache License, Version 2.0 (the

 * "License"); you may not use this file except in compliance

 * with the License.  You may obtain a copy of the License at

 *

 *     http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

package com.bff.gaia.unified.sdk.io.cassandra;



import java.math.BigInteger;



/** Models a Cassandra token range. */

final class RingRange {

  private final BigInteger start;

  private final BigInteger end;



  RingRange(BigInteger start, BigInteger end) {

    this.start = start;

    this.end = end;

  }



  BigInteger getStart() {

    return start;

  }



  BigInteger getEnd() {

    return end;

  }



  /**

   * Returns the size of this range.

   *

   * @return size of the range, max - range, in case of wrap

   */

  BigInteger span(BigInteger ringSize) {

    return (start.compareTo(end) >= 0) ? end.subtract(start).add(ringSize) : end.subtract(start);

  }



  /** @return true if 0 is inside of this range. Note that if start == end, then wrapping is true */

  public boolean isWrapping() {

    return start.compareTo(end) >= 0;

  }



  @Override

  public String toString() {

    return String.format("(%s,%s]", start.toString(), end.toString());

  }

}